All replies

What kind of Service Account are you using, and what is the difference between your account and the service account? Most likely your account isn't a Administrator on your farm, which does not have permissions to retract solutions.

Retracting a solution is the process of removing assemblies, files, resources, safe control entries, and other solution components from computers to which they
have been deployed. In cases where a solution is completely retracted, the features contained within a solution are uninstalled from the server farm. Just as solutions can be deployed either to the local server or the entire server farm, they can be retracted
in the same way—at the local server or server farm level.

I have already added my regular account to the Farm Administration group and when I run the solution in VS 2010, I run as Adminstration too. When I tried to deploy some of the project in the solutions, they work, but some don't.